Holding(s) in Company

Antofagasta PLC 24 January 2007 news release For immediate release: 24 January 2007 Antofagasta plc SCHEDULE 10 NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Name of company Antofagasta plc 2. Name of shareholder having a major interest Barclays PLC 3. Please state whether notification indicates that it is in respect of holding of the shareholder named in 2 above or in respect of a non-beneficial interest or in the case of an individual holder if it is a holding of that person's spouse or children under the age of 18 Non-beneficial interest 4. Name of the registered holder(s) and, if more than one holder, the number of shares held by each of them See attached schedule 5. Number of shares / amount of stock acquired N/A 6. Percentage of issued class N/A 7. Number of shares / amount of stock disposed N/A 8. Percentage of issued class N/A 9. Class of security GBP0.05 Ordinary Shares 10. Date of transaction Not known 11. Date company informed 23 January 2007 (notification of interest as at 19 January 2007) 12. Total holding following this notification 39,298,964 13. Total percentage holding of issued class following this notification 3.99% 14. Any additional information N/A 15. Name of contact and telephone number for queries Hussein Barma +44 020 7808 0988 16. Name and signature of authorised company official responsible for making this notification Hussein Barma +44 020 7808 0988 Schedule to Schedule 10 Date of notification: 19 January 2007 Antofagasta plc ------------------------------- ----------- --------- Legal Entity Holding Percentage ------------------------------- ----------- --------- Barclays Global Investors, N.A. 14,189,096 1.4393 ------------------------------- ----------- --------- Gerrard Ltd 96,430 0.0098 ------------------------------- ----------- --------- Barclays Global Investors Japan Trust & Banking 141,654 0.0144 ------------------------------- ----------- --------- Barclays Life Assurance Co Ltd 2,250,479 0.2283 ------------------------------- ----------- --------- Barclays Capital Securities Ltd 1,250,237 0.1268 ------------------------------- ----------- --------- Barclays Global Investors Ltd 17,398,765 1.7648 ------------------------------- ----------- --------- Barclays Global Investors Japan Ltd 3,972,303 0.4029 ------------------------------- ----------- --------- Total 39,298,964 3.9863 ------------------------------- ----------- --------- ------------------------------- ----------- Registered Holder Holding ------------------------------- ----------- BNP PARIBAS 167,806 ------------------------------- ----------- Barclays Capital Nominees Ltd 1,159,534 ------------------------------- ----------- Barclays Global Investors 10,467,577 ------------------------------- ----------- CIBC MELLON GLOBAL SECURITIES 111,814 ------------------------------- ----------- Def Barclays Global Investors 80,228 ------------------------------- ----------- Durlacher Nominees Ltd 90,703 ------------------------------- ----------- INVESTORS BANK & TRUST COMPANY 338,520 ------------------------------- ----------- INVESTORS BANK & TRUST CO. 39,465 ------------------------------- ----------- JP MORGAN (BGI CUSTODY) 17,398,765 ------------------------------- ----------- JP MORGAN (BGI CUSTODY) 2,250,479 ------------------------------- ----------- JP Morgan Chase 1,681,492 ------------------------------- ----------- JP Morgan Chase 141,654 ------------------------------- ----------- JP MORGAN CHASE BANK 954,963 ------------------------------- ----------- MELLON TRUST OF NEW ENGLAND 148,787 ------------------------------- ----------- Master Trust Bank of Japan, Ltd. 819,321 ------------------------------- ----------- Mellon Trust - US CUSTODIAN / TRUSTEE 335,852 ------------------------------- ----------- Mitsubishi UFJ Trust and Banking Corporation 55,722 ------------------------------- ----------- Mizuho Trust & Banking Co., Ltd. 1,415,768 ------------------------------- ----------- NORTHERN TRUST BANK - BGI SEPARATE FUND CUSTODY 690,715 ------------------------------- ----------- R C Greig Nominees Limited 88,890 ------------------------------- ----------- R C Greig Nominees Limited a/c AK1 4,015 ------------------------------- ----------- R C Greig Nominees Limited a/c BL1 2,000 ------------------------------- ----------- R C Greig Nominees Limited a/c CM1 1,525 ------------------------------- ----------- STATE STREET BANK & TRUST - WIRE BANK - ABA#026009 124,757 ------------------------------- ----------- STATE STREET BOSTON 277,665 ------------------------------- ----------- STATE STREET TRUST OF CANADA - WIRE BANK - NO ABA 264,655 ------------------------------- ----------- The Northern Trust Company - U.S. CUSTODIAN/TRUSTE 186,292 ------------------------------- ----------- Total 39,298,964 ------------------------------- ----------- This information is provided by RNS The company news service from the London Stock Exchange

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